This is far from the best episode of TNG, but it is riddled with some of the very best lines. Especially John De Lancie, and his delivery of:
"Eaten any good books lately?", "Please don't feel compelled now to tell me the story of The Boy Who Cried 'Worf'.", "Simple. Change the gravitational constant of the universe.", "You weren't like that before the beard.", "Ah, Dr. Crusher. I see Starfleet has shipped you back into exile." "Your bedside manner's admirable, Doctor. I'm sure your patients recover quickly, just to get away from you!"
"Eaten any good books lately?", "Please don't feel compelled now to tell me the story of The Boy Who Cried 'Worf'.", "Simple. Change the gravitational constant of the universe.", "You weren't like that before the beard.", "Ah, Dr. Crusher. I see Starfleet has shipped you back into exile." "Your bedside manner's admirable, Doctor. I'm sure your patients recover quickly, just to get away from you!"